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Question 991

RRB NTPC 2016• Mathematics• Mathematics

The difference between the ages of two sisters is 2 years when father's age was 52. Father is elder by 2 years to mother. Elder sister's age is half of mother's age. Find the age of younger sister.

  1. AOption (a)

    27

  2. BOption (b)

    21

  3. COption (c)

    25

  4. DOption (d)

    23

View answer & explanation

Correct answer

Answer: (d)D.

23

Explanation not yet available.

Question 992

RRB NTPC 2016• Mathematics• Mathematics

The maturity value after three years, of a certain sum at 15% p.a. simple interest, is Rs. 8,700/-. Find the principal amount.

  1. AOption (a)

    Rs. 5,000

  2. BOption (b)

    Rs. 6,000

  3. COption (c)

    Rs. 5,500

  4. DOption (d)

    Rs. 6,500

View answer & explanation

Correct answer

Answer: (b)B.

Rs. 6,000

Explanation not yet available.

Question 993

RRB NTPC 2016• Mathematics• Mathematics

If PIXIE is OHXHD then ELEANOR is

  1. AOption (a)

    DKDAMNQ

  2. BOption (b)

    DDKAMNR

  3. COption (c)

    DKDANMR

  4. DOption (d)

    DJDAMNQ

View answer & explanation

Correct answer

Answer: (a)A.

DKDAMNQ

Explanation not yet available.

Question 994

RRB NTPC 2016• Mathematics• Mathematics

The marked prices of big and small note books are Rs. 10 and Rs. 15 respectively. A student bought 5 dozen small and 10 dozen big note books at a total discount of 5%. Find the total discount amount.

  1. AOption (a)

    Rs. 100

  2. BOption (b)

    Rs. 110

  3. COption (c)

    Rs. 120

  4. DOption (d)

    Rs. 130

Question 995

RRB NTPC 2016• Mathematics• Mathematics

An event happening once in 4 years is described as

  1. AOption (a)

    Biennial

  2. BOption (b)

    Quadrennial

  3. COption (c)

    Triennial

  4. DOption (d)

    Perennial

View answer & explanation

Correct answer

Answer: (b)B.

Quadrennial

Explanation not yet available.

Question 996

RRB NTPC 2016• Mathematics• Mathematics

Read the following data carefully and answer the question based on it. (i) 'A + G' means 'A is mother of G' (ii) 'A ÷ G' means 'A is daughter of G' (iii) 'A − G' means 'A is husband of G' (iv) 'A × G' means 'A is maternal aunt of G' If L + M × N then how is L related to N?

  1. AOption (a)

    Aunt

  2. BOption (b)

    Mother

  3. COption (c)

    Daughter

  4. DOption (d)

    Grandmother

View answer & explanation

Correct answer

Answer: (d)D.

Grandmother

Explanation not yet available.

Question 997

RRB NTPC 2016• Mathematics• Mathematics

Find the value of [(525+252)² - (525-252)²] / (525 × 252).

  1. AOption (a)

    3

  2. BOption (b)

    4

  3. COption (c)

    5

  4. DOption (d)

    6

View answer & explanation

Correct answer

Answer: (b)B.

4

Explanation not yet available.

Question 998

RRB NTPC 2016• Mathematics• Mathematics

If 2cosθ = √3, cosθ × tanθ =?

  1. AOption (a)

    1

  2. BOption (b)

    √3/3

  3. COption (c)

    √3/2

  4. DOption (d)

    1/2

View answer & explanation

Correct answer

Answer: (d)D.

1/2

Explanation not yet available.

Question 999

RRB NTPC 2016• Mathematics• Mathematics

A generator converts

  1. AOption (a)

    mechanical energy into electrical energy.

  2. BOption (b)

    electrical energy into chemical energy.

  3. COption (c)

    thermal energy into electrical energy.

  4. DOption (d)

    electrical energy into light energy.

View answer & explanation

Correct answer

Answer: (a)A.

mechanical energy into electrical energy.

Explanation not yet available.

Question 1000

RRB NTPC 2016• Mathematics• Mathematics

A man has equal number of five, ten and twenty rupee notes amounting to Rs. 385. Find the total number of notes?

  1. AOption (a)

    33

  2. BOption (b)

    11

  3. COption (c)

    15

  4. DOption (d)

    21

View answer & explanation

Correct answer

Answer: (a)A.

33

Explanation not yet available.
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